all components installed successfully but 'Database Configuration Assistant' failed so database also didn't installed successfully.
I have created new database using dbca. database created successfully but keep giving the warning 'ORA: 12547: TNS: lost contact' many times within database installation.

when i connect as "sqlplus /nolog"
it connect to sql prompt
then on sql prompt i do "SQL> conn /as sysdba"
it give following error
ORA-12547: TNS:lost contact

Moreover my service is working but listener is not responding at all.
if i pass any of following command the os didn't return any error or warning or anything and os prompt jump to next line.
lsnrctl
lsnrctl status listener_name
lsnrctl start listener_name
lsnrctl stop listener_name

what i have already done by reading the different forums is as under, but it didn't worked.

cd $ORACLE_HOME/bin
chmod 6751 oracle
above didn't worked for me.

$ORACLE_HOME/root.sh from root
above didn't worked for me.

cd $ORACLE_HOME/bin relink
above didn't worked for me.

can some one help me out of (ORA-12547: TNS:lost contact | ORA-12541: TNS:no listener)?

I wonder the installation doc i use may missed any package need install on os.

---------------------------------
what clues exist near the tail end of the alert_SID.log file for this instance?
locate command didn't show any file with name alert_SID.log or alert_ORCL.log, please tell me where can i find it.

]]>weekend792013-11-03T16:35:14-00:00Re: (ORA-12547: TNS:lost contact | ORA-12541: TNS:no listener)Installing Oracle 11gR2 on Ubuntu 12.04/forum/mv/msg/190198/600226/#msg_600226
find / -name alert_\*.log -ls 2>/dev/null]]>BlackSwan2013-11-03T17:03:14-00:00Re: (ORA-12547: TNS:lost contact | ORA-12541: TNS:no listener)Installing Oracle 11gR2 on Ubuntu 12.04/forum/mv/msg/190198/600227/#msg_600227
I do have a database ORCL, i have created it with dbca and after your last post I have reconfirm it with dbca, dbca shows this database in delete database options. (thats the only way i can confirm its existence at the moment)

Moreover when I created the database using dbca it keep popping up the alter 'ORA-12547: TNS:lost contact' but show successful creation in end.
few moments ago I try to reconfigure the database with dbca (as its only way i have to view it) when I give user/pwd on dbca interface to reconfigure database it showed 'Retreveing Information' popup but again 'ORA-12547: TNS:lost contact' alert arrive and 'Retreveing Information' popup disappear.
so dbca also only show this db but cant connect it.]]>weekend792013-11-03T18:18:24-00:00Re: (ORA-12547: TNS:lost contact | ORA-12541: TNS:no listener)Installing Oracle 11gR2 on Ubuntu 12.04/forum/mv/msg/190198/600230/#msg_600230
BlackSwan2013-11-03T18:20:55-00:00Re: (ORA-12547: TNS:lost contact | ORA-12541: TNS:no listener)Installing Oracle 11gR2 on Ubuntu 12.04/forum/mv/msg/190198/600233/#msg_600233
Ok if there is no database, then please tell me how can I create a database in my situation? as 'ORA-12547: TNS:lost contact' not let dbca create a database.
How can I overcome 'ORA-12547: TNS:lost contact' so that I can create new database using dbca.]]>weekend792013-11-04T04:31:06-00:00Re: (ORA-12547: TNS:lost contact | ORA-12541: TNS:no listener)Installing Oracle 11gR2 on Ubuntu 12.04/forum/mv/msg/190198/600238/#msg_600238
Littlefoot2013-11-04T06:04:29-00:00Re: (ORA-12547: TNS:lost contact | ORA-12541: TNS:no listener)Installing Oracle 11gR2 on Ubuntu 12.04/forum/mv/msg/190198/600248/#msg_600248
So here is my status.
Oracle installed but database creation failed.
Tried to create database with dbca but failed with 'ORA-12547: TNS:lost contact'
Can someone help me out of 'ORA-12547: TNS:lost contact'?

with combination of above 3, I got a clean installation (but 'database creation' failed at installation time)
but as there was no 'ORA-12547: TNS:lost contact' this time so i have created new database with dbca and its up and working now.

One more thing i change is that inventory directory was pointing to path '/mnt/u01/.....' and i can't change it so finally i find that inventory path is hardcode in file '/etc/oraInst.loc'
i modified the path in above path to more appropriate path.

]]>weekend792013-11-06T07:09:29-00:00Re: (ORA-12547: TNS:lost contact | ORA-12541: TNS:no listener)Installing Oracle 11gR2 on Ubuntu 12.04/forum/mv/msg/190198/600402/#msg_600402
install Oracle on Ubuntu. Thank you for sharing documents you found useful when solving the problem! I hope you'll be able to use Oracle as well (because, that's the whole point, I suppose).]]>Littlefoot2013-11-06T07:36:49-00:00Re: (ORA-12547: TNS:lost contact | ORA-12541: TNS:no listener)Installing Oracle 11gR2 on Ubuntu 12.04/forum/mv/msg/190198/600422/#msg_600422
Its working fine on Ubuntu.]]>weekend792013-11-06T12:15:20-00:00